Definition of "compartment"

compartment

/kəmˈpɑɹtmənt/

noun
plural compartments
1. A room, or section, or chamber
  Quotations
  This is a second-class ticket. And you're sitting in the first class!” “I'd no idea,” Haldiram said. “I didn't know what compartment was this.” And looking around, he asked, “Where does it say First Class? I still can't see it.
  2014 April 28, Dr. Ulhas R. Gunjal, Home, Again!: A Novel of Identity, Self-Discovery, and Tragedy‎, AuthorHouse, page 313
2. One of the parts into which an area is subdivided.
3. (biochemistry) Part of a protein that serves a specific function.
4. (heraldry) A mound (often of grass), shelf (of e.g. wall) or other thing beneath the shield in a coat of arms on which the supporters stand.
5. (anatomy) A region in the body, delimited by a biological membrane.
verb
third-person singular simple present compartments, present participle compartmenting, simple past and past participle compartmented
1. (transitive) To arrange in separate compartments.